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Sigma-Aldrich

Cobalt(II) chloride

purum p.a., anhydrous, ≥98.0% (KT)

Synonym(s):

Cobalt dichloride, Cobalt muriate, Cobaltous chloride, Dichlorocobalt

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About This Item

Linear Formula:
CoCl2
CAS Number:
7646-79-9
Molecular Weight:
129.84
EC Number:
231-589-4
MDL number:
MFCD00010938
UNSPSC Code:
12352302
PubChem Substance ID:
329759237
NACRES:
NA.21

vapor pressure

40 mmHg ( 0 °C)

grade

purum p.a.

Assay

≥98.0% (KT)

form

powder

impurities

≤2% water

mp

724 °C (lit.)

anion traces

sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤100 mg/kg
Na: ≤200 mg/kg
Ni: ≤1000 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

SMILES string

Cl[Co]Cl

InChI

1S/2ClH.Co/h2*1H;/q;;+2/p-2

InChI key

GVPFVAHMJGGAJG-UHFFFAOYSA-L

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General description

Cobalt(II) chloride is an anhydrous cobalt salt. Cobalt(II) chloride participates in the synthesis of various esters in the presence of acetonitrile.

Application

Cobalt(II) chloride may be employed as a catalyst in the following studies:
  • Acylation of various alcohols (primary and secondary).
  • Acylation of various hydroxyl compounds (high selectivity).
  • Regioselective ring-opening reaction of oxiranes.
  • Coupling reactions of anhydrides or acid chlorides with thiols.
  • Protection of aldehydes, via chemoselective dithioacetalization reaction.
  • Solvent-free synthesis of β-enaminones and β-enamino esters.
The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Dam. 1 - Muta. 2 - Repr. 1B - Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Cobalt (II) chloride catalyzed chemoselective thioacetalization of aldehydes.
De SK.
Tetrahedron Letters, 45(5), 1035-1036 (2004)
Cobalt (II) chloride catalyzed acylation of alcohols with acetic anhydride: scope and mechanism.
Iqbal J and Srivastava RR.
The Journal of Organic Chemistry, 57(7), 2001-2007 (1997)
Cobalt (II) chloride catalysed coupling of thiols and anhydrides: a new and efficient synthesis of thiol esters.
Ahmad S and Iqbal J.
Tetrahedron Letters, 27(32), 3791-3794 (1986)
An unusual chemoselectivity in cobalt (II) chloride catalysed cleavage of oxiranes with anilines: A highly regioselective synthesis of β-amino alcohols.
Iqbal J and Pandey A.
Tetrahedron Letters, 31(4), 575-576 (1990)
Xin Li et al.
Molecular and cellular biology, 40(8) (2020-01-29)
Fibrosis is recognized as the major pathological change in adipose tissue during the development of obesity. However, the detailed mechanisms governing the interactions between the fibrotic components and their modifiers remain largely unclear. Here, we reported that matrix metalloproteinase 14
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